Redox Properties of 2,3-Diaminophenazine and Its Electropolymerized Product in Aqueous and Acetonitrile Solutions

Redox properties of 2,3-diaminophenazine were investigated in acidic aqueous and acetonitrile solutions. In each case, continuous potential cycling generated deposited products, poly(2,3-diaminophenazine) (PDAP) on electrode surfaces. PDAP deposited from aqueous solution showed rather complicated redox response with reduction pre-peak that depended on the initial potential, while PDAP deposited from acetonitrile indicated well-defined adsorption species properties in acidic aqueous solution.